KR101433382B1 - Flexible heat-insulated pipe - Google Patents

Flexible heat-insulated pipe Download PDF

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Publication number
KR101433382B1
KR101433382B1 KR1020080029583A KR20080029583A KR101433382B1 KR 101433382 B1 KR101433382 B1 KR 101433382B1 KR 1020080029583 A KR1020080029583 A KR 1020080029583A KR 20080029583 A KR20080029583 A KR 20080029583A KR 101433382 B1 KR101433382 B1 KR 101433382B1
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South Korea
Prior art keywords
pipe
foam
flexible heat
heat
hollow spheres
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KR1020080029583A
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Korean (ko)
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KR20080089306A (en
Inventor
로베르토 루디
크리스티안 담보비
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브루그 로드 아게, 홀딩
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L59/00—Thermal insulation in general
    • F16L59/14—Arrangements for the insulation of pipes or pipe systems
    • F16L59/143—Pre-insulated pipes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L11/00—Hoses, i.e. flexible pipes
    • F16L11/04—Hoses, i.e. flexible pipes made of rubber or flexible plastics
    • F16L11/12—Hoses, i.e. flexible pipes made of rubber or flexible plastics with arrangements for particular purposes, e.g. specially profiled, with protecting layer, heated, electrically conducting
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L11/00—Hoses, i.e. flexible pipes
    • F16L11/04—Hoses, i.e. flexible pipes made of rubber or flexible plastics
    • F16L11/10—Hoses, i.e. flexible pipes made of rubber or flexible plastics with reinforcements not embedded in the wall
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G2110/00—Foam properties
    • C08G2110/0008—Foam properties flexible
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L75/00—Compositions of polyureas or polyurethanes; Compositions of derivatives of such polymers
    • C08L75/04—Polyurethanes
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/13—Hollow or container type article [e.g., tube, vase, etc.]
    • Y10T428/1352—Polymer or resin containing [i.e., natural or synthetic]
    • Y10T428/1376—Foam or porous material containing

Abstract

하나 이상의 매체 안내 내부 파이프, 상기 하나 이상의 내부 파이프를 둘러싸는 외부 파이프, 및 상기 하나 이상의 내부 파이프와 상기 외부 파이프 사이에 있는, 폴리우레탄 포움 또는 폴리이소시아누레이트 포움을 기재로 하는 열 절연 층을 포함하는 가요성 열 절연 파이프에 있어서, Comprising at least one medium guiding inner pipe, an outer pipe surrounding the at least one inner pipe, and a heat insulating layer based on polyurethane foam or polyisocyanurate foam between the at least one inner pipe and the outer pipe Wherein the flexible heat insulating pipe comprises:

상기 포움에 0.1 내지 7.5 중량%의 중공 구가 혼합되고, 상기 중공 구는 열 가소성 플라스틱으로 이루어진 케이스를 가지며, 온도 상승 시 상기 케이스의 팽창을 일으키는 매체로 채워진다.The foam is mixed with 0.1 to 7.5 wt% of hollow spheres, the hollow spheres having a case made of thermoplastic plastic and filled with a medium causing expansion of the case when the temperature rises.

내부 파이프, 외부 파이프, 열 절연 층, 중공 구, 포움, 케이스. Interior pipes, Outer pipes, Heat insulation, Hollows, Foam, Case.

Description

가요성 열 절연 파이프{FLEXIBLE HEAT-INSULATED PIPE}[0001] FLEXIBLE HEAT-INSULATED PIPE [0002]

본 발명은 청구항 1의 전제부에 따른 가요성 열 절연 파이프 및 청구항 4의 전제부에 따른 가요성 열 절연 파이프의 제조 방법에 관한 것이다. The present invention relates to a flexible heat-insulating pipe according to the preamble of claim 1 and a method of manufacturing a flexible heat-insulated pipe according to the preamble of claim 4.

EP 0 897 788 B1호에는 하나 또는 다수의 내부 파이프, 상기 내부 파이프(들)를 둘러싸는 열 절연 층 및 플라스틱 외부 파이프를 포함하는 열 절연 파이프가 공지되어 있다. 외부 파이프는 가요성의 개선을 위해 약간의 파형을 갖는다. 열 절연 층은 폴리올 및 이소시아네이트의 혼합물을 상기 내부 파이프(들)와 상기 외부 파이프 사이의 갭 내로 주입하여 거기서 발포시킨 폴리우레탄 포움으로 이루어진다.EP 0 897 788 B1 discloses a heat insulating pipe comprising one or more inner pipes, a thermal insulation layer surrounding the inner pipe (s) and a plastic outer pipe. The outer pipe has a slight waveform to improve the flexibility. The thermal insulation layer consists of a polyurethane foam foamed by injecting a mixture of polyol and isocyanate into the gap between the inner pipe (s) and the outer pipe and foaming there.

폴리우레탄 포움의 제조는 EP 1 371 469 B1에 제시된다. 갭 내로 주입된 혼합물은 폴리올, 발포제 및 공기를 정적 혼합기에 공급하여 거기서 혼합하고, 상기 혼합물을 동적 혼합기에서 이소시아네이트와 혼합함으로써 제조한다. 상기 방식으로 제조한 혼합물을 내부 파이프(들) 사이의 갭 내로 주입하고, 거기서 발포시킨다.The preparation of polyurethane foams is disclosed in EP 1 371 469 B1. The mixture injected into the gap is prepared by feeding a polyol, blowing agent and air into a static mixer and mixing them there, and mixing the mixture with an isocyanate in a dynamic mixer. The mixture prepared in this way is injected into the gap between the inner pipe (s) and bubbled therein.

내부 파이프(들)와 외부 파이프에 사용된 모든 재료, 예컨대 플라스틱, 및 외부 파이프의 파형은 파이프를 비교적 가요성으로 만들지만, 그 파이프의 사용은 많은 경우 불가능하다.The waveforms of all the materials used in the inner pipe (s) and outer pipe, such as plastic and outer pipe, make the pipe relatively flexible, but the use of the pipe is often impossible.

전술한 간행물에 따라 제조된 열 절연된 파이프는 바람직하게는 원격 열 공급을 위한 옥내 배관 파이프로서 사용된다.The heat-insulated pipe manufactured according to the above-mentioned publication is preferably used as an indoor pipe for remote heat supply.

이 경우, 예컨대 건물, 보호해야 할 빔 등을 둘러싸기 위해 파이프가 좁은 반경 둘레로 휘어져야 하는 경우가 종종 있다.In this case, it is often the case that the pipe has to be bent around a narrow radius to surround the building, the beam to be protected, and the like.

또한, 파이프를 작은 드럼 코어 직경을 갖는 드럼 상에 감고 상기 드럼 상에서 조립 위치로 이동시키는 것이 바람직하다. It is also desirable to wind the pipe onto a drum having a small drum core diameter and to move it to an assembled position on the drum.

본 발명의 과제는 파이프의 가요성을 개선하는 것이다.An object of the present invention is to improve the flexibility of a pipe.

상기 과제는 청구항 1의 특징 및 청구항 4의 특징에 의해 해결된다.The above problem is solved by the features of claim 1 and the features of claim 4.

본 발명의 중요한 장점은 발포 공정 시에 생기는 열에 의해 팽창되는 중공 구에 의해, 완성된 포움이 더 큰 탄성을 가짐으로써, 파이프가 가요성을 얻는다는 것이다. 폴리우레탄 포움에 미세하게 분포된 중공 구는 폴리우레탄 구조 내에서 가요성 완충 영역으로서 작용하기 때문에, 폴리우레탄 포움은 과도하게 경질을 나타내지 않으며 외부 부하 시에 휘어질 수 있다. 이로부터 초래되는 파이프의 감소된 횡방향 강성은 감수될 수 있는데, 그 이유는 옥내 배관 영역에서는 높은 이동 하중이 예상되지 않기 때문이다.An important advantage of the present invention is that the finished foam has greater resilience, by means of a hollow that expands by the heat generated during the foaming process, so that the pipe obtains flexibility. Since the hollow spheres finely distributed in the polyurethane foam act as a flexible buffer zone in the polyurethane structure, the polyurethane foam is not excessively hard and can be bent at the time of external load. The reduced lateral stiffness of the pipe resulting therefrom can be reduced because a high moving load is not expected in the interior piping area.

가요성 폴리우레탄 포움은 힘 작용 시 일정한 압축을 허용한다. 이는 파이프 휨 시에, 플라스틱 내부 파이프, 폴리우레탄 포움 및 플라스틱 외부 파이프가 복합체를 형성하는 파이프의 휨 강성이 낮아진다는 점에서 긍정적인 작용을 한다. 이는, 파이프의 휨 시에 좁은 반경 둘레에서 포움의 파손이 예상되지 않게 하거나 또는 최소로 예상되게 한다. 이로 인해, 잠재적 열교(thermal bridge)가 감소됨으로써, 열 절연이 전체적으로 개선된다.Flexible polyurethane foam permits constant compression at the moment of action. This positively affects the flexural stiffness of the plastic inner pipe, the polyurethane foam, and the plastic outer pipe when the pipe is bent, thereby lowering the flexural rigidity of the pipe forming the composite. This prevents or at least predicts breakage of the foam around a narrow radius during bending of the pipe. As a result, the potential thermal bridge is reduced, thereby improving overall thermal insulation.

중공 구의 양은 바람직하게는 1 내지 5 중량% 이다.The amount of the hollow spheres is preferably 1 to 5% by weight.

중공 구는 포움 내에 팽창된 상태로 존재한다. 발포 과정 동안, 열이 유리되고, 이것에 의해 중공 구의 플라스틱 케이스가 부드러워지며 중공 구의 내부에 생긴 압력 상승 때문에 그 직경을 확대시킨다.The hollow spheres are in an expanded state in the foam. During the foaming process, the heat is liberated, which softens the plastic casing of the hollow sphere and enlarges its diameter due to pressure build-up inside the hollow sphere.

중공 구들은 폴리올, 이소시아네이트, 발포제, 또는 이들 폴리올, 이소시아네이트 및 발포제로 이루어진 혼합물에 첨가될 수 있다. 여기서는, 포움 재료 혼합물이 내부 파이프와 외부 파이프 사이의 갭 내로 도달할 때야 비로소, 중공 구의 케이스의 연화 온도 이상의 온도 상승이 이루어진다는 것이 중요하다.The hollow spheres may be added to a mixture of polyol, isocyanate, blowing agent, or a mixture of these polyols, isocyanates and blowing agents. It is important here that only when the foam material mixture reaches the gap between the inner pipe and the outer pipe, a temperature rise above the softening temperature of the case of the hollow sphere is achieved.

중공 구의 내부에 있는 매체는 모든 시점에서 유체 또는 기체 상태로 존재할 수 있다. 이는 매체의 비등 온도에만 의존한다. 발포 과정 동안 포움을 갭 내로 주입하기 직전 또는 직후에 중공 구의 팽창이 가능해진다는 것만이 중요하다.The medium inside the hollow sphere can be in fluid or gaseous state at any point in time. This depends only on the boiling temperature of the medium. It is only important that the hollow sphere can be expanded immediately before or immediately after the foam is injected into the gap during the foaming process.

하기 실시예를 참고로 본 발명을 상세히 설명한다.The present invention will be described in detail with reference to the following examples.

36 g 폴리올36 g polyol

70 g 이소시아네이트70 g isocyanate

2.2 g 중공 구2.2 g hollow spheres

를 서로 혼합하여 비이커 내에서 자유 발포시킨다. 발포제로는 CO2 를 사용한다.Are mixed with each other and freely foamed in a beaker. CO 2 is used as the foaming agent.

제2 실시예에서는 In the second embodiment,

50 g 폴리올50 g polyol

65.5 g 이소시아네이트65.5 g of isocyanate

2.3 g 사이클로펜탄 (발포제)2.3 g cyclopentane (blowing agent)

2.4 g 중공 구2.4 g hollow spheres

를 서로 혼합하여 비이커 내에서 자유 발포시킨다.Are mixed with each other and freely foamed in a beaker.

중공 구를 포함하지 않는, 동일한 재료로 제조된 포움으로 이루어진 기준 시편과 비교한 손가락 압력 시험에 의해, 본 발명에 따른 포움이 지금까지 공지된 포움보다 훨씬 더 큰 탄성 및 가요성을 갖는 것으로 나타났다.By finger pressure testing in comparison with a reference specimen consisting of a foam made of the same material, without hollows, the foam according to the present invention was found to have much greater elasticity and flexibility than the previously known foams.

Claims (4)

하나 이상의 매체 안내 내부 파이프, 상기 하나 이상의 매체 안내 내부 파이프를 둘러싸는 외부 파이프, 및 상기 하나 이상의 매체 안내 내부 파이프와 상기 외부 파이프 사이에 있는, 폴리우레탄 포움 또는 폴리이소시아누레이트 포움을 기재로 하는 열 절연 층을 포함하는 가요성 열 절연 파이프에 있어서, An article comprising: at least one media guide inner pipe; an outer pipe surrounding the at least one media guide inner pipe; and a heat transfer layer between the at least one media guide inner pipe and the outer pipe, wherein the heat is based on polyurethane foam or polyisocyanurate foam A flexible heat-insulating pipe comprising an insulating layer, 포움 및 중공 구의 총 중량에 기초하여 상기 포움에 1 내지 5 중량%의 중공 구가 혼합되고, 상기 중공 구는 열 가소성 플라스틱으로 이루어진 케이스를 가지며, 온도 상승 시 상기 케이스의 팽창을 일으키는 매체로 채워지는 것을 특징으로 하는 가요성 열 절연 파이프.1 to 5 wt.% Of hollow spheres are mixed in the foam based on the total weight of the foam and the hollow spheres, the hollow spheres having a case made of thermoplastic plastic and filled with a medium causing the case to expand when the temperature rises Features a flexible heat-insulated pipe. 삭제delete 제1항에 있어서, 상기 중공 구는 상기 가요성 열 절연 파이프의 상기 열 절연 층 내에 팽창된 상태로 존재하는 것을 특징으로 하는 가요성 열 절연 파이프.The flexible heat-insulated pipe according to claim 1, wherein the hollow spheres exist in an expanded state in the heat insulating layer of the flexible heat-insulated pipe. 제1항 또는 제3항에 따른 가요성 열 절연 파이프의 제조 방법으로서, 폴리올과 이소시아네이트의 폴리우레탄 포움 성분을 혼합 챔버 내에서 혼합하고, 이 혼합물을 내부 파이프와 외부 파이프 사이의 링 갭 내로 주입하는, 가요성 열 절연 파이프의 제조 방법에 있어서, A process for the production of a flexible heat-insulated pipe according to any one of claims 1 to 3, characterized in that the polyol and isocyanate polyurethane foam components are mixed in a mixing chamber and the mixture is injected into the ring gap between the inner pipe and the outer pipe , A method of manufacturing a flexible heat-insulated pipe, 상기 중공 구를 상기 혼합 챔버 내에서 상기 폴리올, 상기 이소시아네이트, 발포제, 또는 이들 폴리올, 이소시아네이트 및 발포제로 이루어진 혼합물에 첨가하는 것을 특징으로 하는 가요성 열 절연 파이프의 제조 방법.Wherein the hollow sphere is added in the mixing chamber to the mixture of the polyol, the isocyanate, the foaming agent, or a mixture of these polyol, isocyanate and foaming agent.
KR1020080029583A 2007-03-31 2008-03-31 Flexible heat-insulated pipe KR101433382B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007015660A DE102007015660A1 (en) 2007-03-31 2007-03-31 Flexible heat-insulated conduit
DE102007015660.1 2007-03-31

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KR20080089306A KR20080089306A (en) 2008-10-06
KR101433382B1 true KR101433382B1 (en) 2014-08-26

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US (1) US8087432B2 (en)
JP (1) JP2008256209A (en)
KR (1) KR101433382B1 (en)
DE (1) DE102007015660A1 (en)
RU (1) RU2372551C1 (en)

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US8087432B2 (en) 2012-01-03
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